Ricerca semantica
- Patent n° US-1507782, of 1924-09-09, requested on 1920-01-30, of Carl F. Litts, W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° US-1574929, of 1926-03-02, requested on 1922-04-01, of Robert T. Pollock, John Hancock. Fountain pen.
- Patent n° US-1574930, of 1926-03-02, requested on 1924-04-18, of Robert T. Pollock, John Hancock. Fountain pen.
- Patent n° US-1624554, of 1927-04-12, requested on 1925-07-13, of Theodor Kovacs, Günther Wagner - Pelikan. Reservoir Pen.
- Patent n° US-1633111, of 1927-06-21, requested on 1925-07-11, of Theodor Kovacs, Günther Wagner - Pelikan. Reservoir pen.
- Patent n° US-1633896, of 1927-06-28, requested on 1923-07-17, of Theodor Kovacs, Günther Wagner - Pelikan. Fountain pen.
- Patent n° US-1724107, of 1929-09-13, requested on 1923-02-17, of Robert T. Pollock, John Hancock. Fountain pen.
- Patent n° US-1750410, of 1930-03-11, requested on 1928-04-11, of Theodor Kovacs, Günther Wagner - Pelikan. Reservoir pen.
- Patent n° US-1811874, of 1931-06-30, requested on 1929-01-30, of Edward C. Berry, Chilton. Fountain-pen.
- Patent n° US-1818743, of 1931-08-11, requested on 1929-09-26, of Kenneth S. Parker, The Parker Pen Company. Adjustable feed for fountain pens.
- Patent n° US-1853731, of 1932-04-12, requested on 1929-08-19, of Theodor Kovacs, Günther Wagner - Pelikan. Reservoir pen.
- Patent n° US-1882644, of 1932-10-11, requested on 1930-08-16, of Louis H. Juster, Waterman. Feed for fountain pens.
- Patent n° US-1885862, of 1932-11-01, requested on 1931-06-29, of Salomon M. Sager, Sager. Feed bar and pen point.
- Patent n° US-1908123, of 1933-05-09, requested on 1929-07-22, of William R. Cuthbert, W. A. Sheaffer Pen Company. Fountain pen construction.
- Patent n° US-1950364, of 1934-03-06, requested on 1932-09-26, of William E. Moore, The Parker Pen Company. Fountain pen feed.
- Patent n° US-2107150, of 1938-02-01, requested on 1935-09-21, of William F. Heising, W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° US-2107162, of 1938-02-01, requested on 1935-09-21, of Henry H. Polk Jr., W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° US-2110578, of 1938-03-08, requested on 1935-09-21, of Aloysius L. Prasch, W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° US-2129134, of 1938-09-06, requested on 1936-07-21, of William F. Johnson, Mentmore. Self-filling sac pen.
- Patent n° US-214795, of 1879-04-29, requested on 1879-02-06, of William W. Stewart, Swan. Improvement in fountain-pen holder.
- Patent n° US-2223541, of 1940-12-03, requested on 1939-01-06, of Marlin S. Baker, The Parker Pen Company. Fountain pen.
- Patent n° US-2241865, of 1941-05-13, requested on 1939-12-28, of Lynn P. Martin, Herman K. Stempel, W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° US-2255093, of 1941-09-09, requested on 1940-07-01, of George E. Ziegler, Wahl Eversharp. Fountain pen.
- Patent n° US-2282840, of 1942-05-12, requested on 1941-10-03, of Russell T. Wing, The Parker Pen Company. Fountain pen.
- Patent n° US-2283333, of 1942-05-19, requested on 1941-05-22, of Lynn P. Martin, W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° US-2292381, of 1942-08-11, requested on 1940-12-24, of Henry C. Klagges, Esterbrook. Fountain pen feed.
- Patent n° US-2303373, of 1942-12-01, requested on 1941-11-03, of Lynn P. Martin, W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° US-2316479, of 1943-04-13, requested on 1942-08-27, of Norman E. Weigel, Wearever. Fountain pen.
- Patent n° US-2328143, of 1943-08-31, requested on 1942-06-27, of Benjamin W. Hanle, Eagle. Fountain pen.
- Patent n° US-2337343, of 1943-12-21, requested on 1941-04-01, of John William Para, Wearever. Pen.
- Patent n° US-2375770, of 1945-05-15, requested on 1943-11-19, of Arthur O. Dahlberg, The Parker Pen Company. Fountain pen.
- Patent n° US-2380763, of 1945-07-31, requested on 1944-10-14, of David Juelss, Venus. Feed for fountain pens.
- Patent n° US-2398521, of 1946-04-16, requested on 1944-01-20, of George D. Cloutier, Wahl Eversharp. Fountain pen.
- Patent n° US-2410423, of 1946-11-05, requested on 1944-10-14, of Thomas F. Brinson, Scripto. Fountain pen.
- Patent n° US-2417861, of 1947-03-25, requested on 1945-01-09, of Arthur O. Dahlberg, The Parker Pen Company. Fountain pen.
- Patent n° US-2474996, of 1949-07-05, requested on 1945-10-12, of Frank B. Wallis, W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° US-2489983, of 1949-11-29, requested on 1944-02-14, of Victor H. Severy, Scripto. Fountain pen.
- Patent n° US-2512004, of 1950-06-20, requested on 1945-03-05, of Russell T. Wing, The Parker Pen Company. Fountain pen.
- Patent n° US-2519966, of 1949-07-12, requested on 1946-06-11, of William F. Johnson, Mentmore. Fountain pen.
- Patent n° US-2548906, of 1951-04-17, requested on 1945-10-19, of John William Para, Wearever. Fountain pen.
- Patent n° US-2581739, of 1952-01-08, requested on 1945-03-05, of Russell T. Wing, The Parker Pen Company. Fountain pen.
- Patent n° US-2619070, of 1952-11-25, requested on 1946-09-19, of Marlin S. Baker, The Parker Pen Company. Ink feed and overflow collector means for fountain pens.
- Patent n° US-2620774, of 1952-12-09, requested on 1948-06-08, of James A. Mustard, The Parker Pen Company. Fountain pen.
- Patent n° US-2648309, of 1953-08-11, requested on 1950-09-23, of Floyd E. Bartell, The Parker Pen Company. Fountain pen.
- Patent n° US-2756722, of 1956-07-31, requested on 1952-05-08, of Josef C. Lamy, Lamy. Fountain pen structure.
- Patent n° US-2766728, of 1956-10-16, requested on 1950-07-15, of Theodor Kovacs, Günther Wagner - Pelikan. Fountain pen.
- Patent n° US-2766729, of 1956-10-16, requested on 1951-07-10, of Theodor Kovacs, Günther Wagner - Pelikan. Fountain pen.
- Patent n° US-2770221, of 1956-11-13, requested on 1951-03-29, of William Tonkowich, Waterman. Fountain pen.
- Patent n° US-2774333, of 1956-12-18, requested on 1950-12-19, of David Kahn, Wearever. Fountain pen with improved feed construction.
- Patent n° US-2881737, of 1959-04-14, requested on 1955-10-24, of Donald H. Young, Waterman. Fountain pen feed construction.